Nickel Metal Hydride batteries

[Mark Story]

Hi Howard,

NiMH batteries do not have the memory effect of NiCads, run for about 30%
longer on each charge and are made from nontoxic metals - so are more
environmentally safe.  However, besides the price difference they last
nearly half as long as NiCads (~400 charge-discharge cycles vs.. ~700 for
NiCad).

Seems the next step after NiMH is Lithium Ion.  LiON deliver about twice the
run time as NiMH per charge, no memory and about the same life span.  As you
might expect though, are very expensive and limited in availability.

I have had slim NiMH in my cell phone for the past year and I love it - very
fast charge, light and convenient.  However, after only a year is showing
signs of tiring out.  Not looking forward to spending the $100 to replace
it.

Mark Story, RPT
Spokane, WA
mark.story@worldnet.att.net

-----Original Message-----
From: Howard S. Rosen <hsrosen@emi.net>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: Wednesday, October 15, 1997 12:43 PM
Subject: Re: Nickel Metal Hydride batteries


>It was my understanding that Nickel Metal Hydride batteries are
>*definitely* better than NiCads because they do not have a "memory" as do
>NiCads. I find this characteristic very advantageous. Is there something
>else about these batteries that you can tell us about? Thanks!
>
>Howard S. Rosen, RPT
>Boynton Beach, Florida